/Engine/Source/Editor/Kismet/Public/BlueprintActionMenuUtils.h
A number of different palette actions hold onto node-templates in different ways. This handles most of those cases and looks to extract said node- template from the specified action.
A pointer to the extracted node (NULL if the action doesn't have one, or we don't support the specific action type yet)
static const [UK2Node](API\Editor\BlueprintGraph\UK2Node) * ExtractNodeTemplateFromAction ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FEdGraphSchemaAction](API\Runtime\Engine\EdGraph\FEdGraphSchemaAction) > PaletteAction )